I’m just going to touch on this a little as I don’t really have hard numbers to back this up. I am going to do my best to gather some hard facts on this but it is not easy to stop in the middle of a boss fight to take note of differing threat numbers.
The simple fact is this. Threat is not dead. At least not when you have upper level dps’ers who have the gear, capacity, and skill to play at the top of their game.
Since Patch 3.0 hit, we have seen tank threat skyrocket. It’s great fun to see 2500 TPS, and one would think that would mean we would have zero threat problems, and many tanks and raids are saying this is true. But I’m here to tell you, there are still DPS raid members who can, and will be right on your ass on threat, possibly even threat capped and having to hold back.
Strong mages, DPS warriors, ret paladins, enhancement shaman. These are the ones I see riding my ass in threat since Patch 3.0. I keep an eye on those who are right behind me in threat and will even use a GCD to move my Vigilance to someone who is right behind me on threat.
So basically, the point of the story is this. Do not neglect your threat. Perfect your rotations and your reactions to Revenge, Shield Slam, Devastate and Sword and Board. Use Heroic Strike whenever you have the surplus rage to do so, or reactively use it after a Revenge if you have the Glyph of Revenge